Editor’s note: The Basics department this month is an excerpt from the ISA book Flow of Industrial Fluids – Theory and Equations by Raymond Mulley. Some material in this section may seem self-evident ...

Some liquids show resistance to motion and it is like internal friction. This is called viscosity. Liquids acquire a free surface when poured in a container. The additional energy that these surfaces ...

If there are no shear stresses present, there is no fluid deformation, and the behavior of a fluid is described by the bulk modulus relating the pressure and the compression strain. In the presence of ...

When a force or stress is applied to a fluid, it flows, resulting in internal friction that resists the flow. Therefore, viscosity is defined as the internal friction of a fluid, or in other words, ...

SAN ANTONIO — March 6, 2023 —A Southwest Research Institute team has developed a mechanical testing device to analyze fluids and lubricants formulated for electric vehicles. The team modified a ...